TY  - BOOK
ED  - THE INSTITUTION OF MINING AND METALLURGY
TI  - Institution Of Mining And Metallurgy: Transactions Vol 88 June 1979
U1  - 669.05 
PY  - 1979///
CY  - LONDON
PB  - THE INSTITUTION OF MINING AND METALLURGY
KW  - MINING AND METALLURGY
ER  -